BUF - ONT

C$ 211 Find Cheap Flights from Buffalo to Ontario

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Buffalo to Ontario departing on 31/1. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Ontario

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Buffalo to Ontario, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Buffalo to Ontario, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
C$ 404
Overall average: C$ 703
JetBlue
Wed 29/4Mon 4/5
BUF - ONT • 1 stop
Cheapest one-way flights
C$ 211
Typical prices: C$ 287-C$ 452
Delta
Sat 31/1
BUF - ONT • 1 stop
Top airlines
Delta
Cheapest • from C$ 423 (round-trip)
Southwest
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to travel
October
Cheapest • 35% price drop
April
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to Ontario!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Buffalo to Ontario (BUF-ONT)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Buffalo to Ontario that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Buffalo to Ontario

Wed, 29 Apr - Mon, 4 May
JetBlue Logo
4:00 p.m. - 10:09 p.m.
BUF
-
ONT
9h 09m1 stop
JetBlue Logo
11:25 p.m. - 11:29 a.m.
ONT
-
BUF
9h 04m1 stop
C$ 404JetBlue
Sat, 21 Feb - Tue, 24 Feb
Delta Logo
2:08 p.m. - 9:05 p.m.
BUF
-
ONT
9h 57m1 stop
Delta Logo
10:20 p.m. - 11:18 a.m.
ONT
-
BUF
9h 58m1 stop
C$ 423Delta
Sat, 21 Feb - Tue, 24 Feb
Delta Logo
2:08 p.m. - 9:05 p.m.
BUF
-
ONT
9h 57m1 stop
Delta Logo
10:20 p.m. - 2:56 p.m.
ONT
-
BUF
13h 36m2 stops
C$ 430Delta
Wed, 29 Apr - Sat, 2 May
JetBlue Logo
4:00 p.m. - 10:09 p.m.
BUF
-
ONT
9h 09m1 stop
JetBlue Logo
11:25 p.m. - 11:10 a.m.
ONT
-
BUF
8h 45m1 stop
C$ 451JetBlue
Thu, 8 Jan - Sat, 17 Jan
Delta Logo
6:00 a.m. - 11:31 a.m.
BUF
-
ONT
8h 31m1 stop
Delta Logo
12:41 p.m. - 11:56 p.m.
ONT
-
BUF
8h 15m1 stop
C$ 475Delta
Wed, 7 Jan - Thu, 29 Jan
Delta Logo
5:35 p.m. - 9:05 p.m.
BUF
-
ONT
30h 30m2 stops
Delta Logo
12:41 p.m. - 2:58 p.m.
ONT
-
BUF
23h 17m2 stops
C$ 488Delta
Thu, 30 Apr - Sat, 2 May
JetBlue Logo
4:00 p.m. - 10:09 p.m.
BUF
-
ONT
9h 09m1 stop
JetBlue Logo
11:25 p.m. - 11:10 a.m.
ONT
-
BUF
8h 45m1 stop
C$ 504JetBlue
Wed, 7 Jan - Thu, 29 Jan
Delta Logo
5:35 p.m. - 9:05 p.m.
BUF
-
ONT
30h 30m2 stops
Delta Logo
12:41 p.m. - 11:28 p.m.
ONT
-
BUF
7h 47m1 stop
C$ 514Delta
Wed, 29 Apr - Wed, 29 Apr
Delta Logo
6:00 a.m. - 11:20 a.m.
BUF
-
ONT
8h 20m1 stop
Delta Logo
10:59 p.m. - 11:02 a.m.
ONT
-
BUF
9h 03m1 stop
C$ 519Delta
Sun, 1 Feb - Sun, 8 Feb
Delta Logo
6:00 a.m. - 11:31 a.m.
BUF
-
ONT
8h 31m1 stop
Delta Logo
10:30 p.m. - 10:52 p.m.
ONT
-
BUF
21h 22m2 stops
C$ 544Delta
Booking Insights

KAYAK's insights & trends for Buffalo to Ontario flights

Get data-powered insights and trends into flights from Buffalo to Ontario to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from Buffalo to Ontario?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Buffalo to Ontario, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Buffalo to Ontario is October, where tickets cost C$ 422 (return) on average. On the other hand, the most expensive months are December and June, where the average cost of round-trip tickets is C$ 1,166 and C$ 787 respectively.

Find deals

Good to know

Low seasonJuly
Cheapest flightC$ 211
Best time to beat the crowds (10% less expensive on average)
Most popular time to fly (9% more expensive on average)
Flight from Buffalo to Ontario

When to book flights from Buffalo to Ontario

Are your dates flexible? Find out the best times to travel from Buffalo to Ontario based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Buffalo to Ontario

  • What is the cheapest flight from Buffalo to Ontario?

    In the last 3 days, the lowest price for a flight from Buffalo to Ontario was C$ 211 for a one-way ticket and C$ 404 for a round-trip.

  • Which aircraft models fly most regularly from Buffalo to Ontario?

    We unfortunately don’t have that data for this specific route.

  • How does KAYAK find such low prices on flights from Buffalo to Ontario?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Buffalo to Ontario.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Buffalo to Ontario?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Ontario from Buffalo is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Buffalo to Ontario?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Ontario with an airline and back to Buffalo with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Buffalo to Ontario?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Ontario from Buffalo up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Buffalo to Ontario

 
See real verified KAYAK customer reviews for airlines flying from Buffalo to Ontario. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Buffalo to Ontario? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.9
SouthwestOverall score based on 4252 reviews
7.5Entertainment
8.0Comfort
8.1Boarding
8.6Crew
7.0Food
Airline reviews

The boarding and seat assignment system no longer works for me, but I know it is being replaced. Otherwise, I am good with the overall experience.

8.0 ExcellentRussell, Dec 2025
SAN - OAK
Read more Southwest reviews

The boarding and seat assignment system no longer works for me, but I know it is being replaced. Otherwise, I am good with the overall experience.

The lead steward kept singing about "San Francisco" and hotel California---more annoying than humorous....needs work. Flight was smooth and on time.

Still a fan of open seating. Flight was on schedule and arrived on time. The 737 MAX is very comfortable.

Airline travel is always too cramped to really be pleasant, but the cabin crew on this flight did a pretty good job of making up for it by putting on some music during boarding and sprinkling a few funny remarks into the safety briefing and announcements, and just generally being friendly and helpful. It definitely reminded me of why I prefer the in-flight experience on Southwest!

San Diego airport is brand new, spacious, airy and very smooth checkin at SW baggage drop.

Ever since Southwest starting charging for bags, passengers don't want to pay to check their bags, so the gate agents have to beg people to check their roller bags now because there's "not enough space". This was a terrible business move by Southwest.

Delays delays delays. Late taking off, late landing, wait for a gate, etc.

Connecting flight is on time and boarding was a breeze!

Very smooth checking in our luggage with a super pleasant SW agent. I enjoyed a fun entertaining movie.

First time traveling on Southwest since bag fees were implemented. Usual good service. Just more expensive now.

Everything you need to know for your flight from Buffalo to Ontario

Information on your arrival and departure airports

Buffalo (BUF)
Ontario (ONT)